knobbed vs knotted

knobbed and knotted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
knobbed	No	Yes	No	No
knotted	No	Yes	No	No

As adjectives, knobbed and knotted are synonyms defined as:

knobbed and knotted: used of old persons or old trees; covered with knobs or knots

Other synonyms of knobbed include gnarled, gnarly, knotty.

knobbed (adjective)	knotted (adjective)
used of old persons or old trees; covered with knobs or knots	used of old persons or old trees; covered with knobs or knots
	tied with a knot